Senior Mainframe Developer
Confirmed on the employer's own hiring board on Nov 14, 2026. First seen by Alion on Nov 13, 2026. Cognizant scores A on the Alion truth index.
We are seeking a Senior Mainframe Developer with 10+ years of experience to lead legacy application analysis, Business Rules Extraction (BRE), and Mainframe-to-Databricks modernization initiatives within the Healthcare domain. In this role, you will serve as the primary onshore technical lead-partnering directly with client stakeholders, guiding offshore engineering teams, and leveraging AI tools like Claude to extract complex legacy business rules and validate functional equivalence across modernized cloud data platforms.
In this role, you will
- Analyse legacy Mainframe applications and extract existing business rules for BRE creation and modernization.
- Coordinate directly with onshore customers and stakeholders to gather requirements, clarify business logic, and provide technical solutions.
- Drive discussions on legacy application analysis, rule mapping, Databricks integration and modernization approach.
- Work closely with offshore development teams, provide technical guidance and track deliverables.
- Own functional validation, defect resolution, reconciliation, and end-to-end delivery to ensure business equivalence between legacy and modernized application
Work model:
We strive to provide flexibility wherever possible. Based on this role’s business requirements, this is a remote position open to qualified applicants in Canada. Regardless of your working arrangement, we are here to support a healthy work-life balance through our various wellbeing programs.
Note: The working arrangements for this role are accurate as of the date of posting. This may change based on the project you’re engaged in, as well as business and client requirements. Rest assured; we will always be clear about role expectations.
What you need to have to be considered:
Overall 10+ years of experience with below skills:
- Mainframe technologies: COBOL, JCL, DB2, SQL, VSAM, Easytrive , REXX( optional), change management, TSO ISPF, expeditor, Healthcare domain knowledge , prompt engineering and Claude exposure
- Modernization technologies: Business Rules Extraction process using AI tools like Claude (BRE), data engineering, and integration.
- Mainframe-to-Databricks integration, data mapping, transformation, and validation.
We're excited to meet people who share our mission and can make an impact in a variety of ways. Don't hesitate to apply, even if you only meet the minimum requirements listed. Think about your transferable experiences and unique skills that make you stand out as someone who can bring new and exciting things to this role.
Total compensation:
We regularly assess market data to ensure we offer a competitive compensation package for our associates. The base salary for this position ranges between CAD 90,000 - 113,000 per year. Where the successful candidate may fall within the range depends on relevant education, work and/or management experience and other business-related and job-necessary qualifications. This position is also eligible for Cognizant’s discretionary annual performance-based bonus, as well as benefits that support your physical, mental and financial wellbeing.